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All ratings refer to the UK growing conditions unless otherwise stated. Minimum
temperature ranges (in degrees C) are shown in brackets
AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
'Elizabeth' is a vigorous very large deciduous climber with bronze young trifoliate leaves, mid green with age. Slightly scented pale pink flowers with a satin sheen to 6cm in width have pale yellow stamens. Flowers late spring to early summer with occasional later flowers.
'Tetrarose' is a vigorous very large deciduous climber with large bronze-green leaves and reddish-brown stems. Single flowers to 7.5cm in width, have four rich mauve-pink sepals and golden-yellow stamens. Flowers from late spring to early summer
'Fragrant Spring' is a climber 7-10m high with bronze leaves and scented flowers, 6-8cm across, composed of four pink sepals and pale yellow-green stamens, in early summer; many clematis are visited by bees for pollen, and some also provide nectar
C. montana var. wilsonii is a deciduous climber up to 9 metres high with green leaves and starry flowers that appear later than other varieties of this species. The flowers are white with greeny-cream stamens and have a scent reminiscent of chocolate
C. montana var. grandiflora is a very vigorous large deciduous climber with trifoliate leaves. Single pure white flowers to 7cm across from late spring to early summer with occasional later flowers.
'Broughton Star' is a moderately vigorous, very large, deciduous climber with bronze-tinted young leaves turning dark green when mature. Double and semi-double deep pink flowers with prominent deep pink veining, to 6cm wide from late spring to early summer.
C. montana is a vigorous deciduous species, reaching 7-12m if left unchecked. Plants are smothered in small, single, white flowers in late spring; leaves often have a bronze or purple hue when they first emerge before turning green
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